n. parasol, portable cover to protect from rain or sun which is held up by a supporting frame; parasol-like body of a jellyfish; something that protects from above
adj. comprehensive, inclusive; pertaining to that which acts as an umbrella

noun: having the function of uniting a group of similar things Example:The Democratic Party is an umbrella for many liberal groups. noun: a formation of military planes maintained over ground operations or targets Example:An air umbrella over England. noun: a lightweight handheld collapsible canopy adjective: covering or applying simultaneously to a number of similar items or elements or groups Example:An umbrella organization.